Diel Variation of Trace Metals in the Upper Clark Fork River, Montana

1996 ◽  
Vol 30 (6) ◽  
pp. 1953-1960 ◽  
Author(s):  
Christine M. Brick ◽  
Johnnie N. Moore
Keyword(s):  
Trace Metals ◽  
Diel Variation ◽  
Clark Fork River ◽  
Upper Clark Fork River

scholarly journals Using FlFFF and aTEM to determine trace metal–nanoparticle associations in riverbed sediment

2010 ◽  
Vol 7 (1) ◽  
pp. 82 ◽  
Author(s):  
K. L. Plathe ◽  
F. von der Kammer ◽  
M. Hassellöv ◽  
J. Moore ◽  
M. Murayama ◽  
...  
Keyword(s):  
Trace Metals ◽  
Toxic Metals ◽  
Inductively Coupled Plasma ◽  
Large Scale ◽  
Size Fraction ◽  
Metal Nanoparticle ◽  
Contaminated Sediment ◽  
Inductively Coupled ◽  
Clark Fork River ◽  
Nano Size

Environmental context. Determining associations between trace metals and nanoparticles in contaminated systems is important in order to make decisions regarding remediation. This study analysed contaminated sediment from the Clark Fork River Superfund Site and discovered that in the <1-μm fraction the trace metals were almost exclusively associated with nanoparticulate Fe and Ti oxides. This information is relevant because nanoparticles are often more reactive and show altered properties compared with their bulk equivalents, therefore affecting metal toxicity and bioavailability. Abstract. Analytical transmission electron microscopy (aTEM) and flow field flow fractionation (FlFFF) coupled to multi-angle laser light scattering (MALLS) and high-resolution inductively coupled plasma mass spectroscopy (HR-ICPMS) were utilised to elucidate relationships between trace metals and nanoparticles in contaminated sediment. Samples were obtained from the Clark Fork River (Montana, USA), where a large-scale dam removal project has released reservoir sediment contaminated with toxic trace metals (namely Pb, Zn, Cu and As) which had accumulated from a century of mining activities upstream. An aqueous extraction method was used to recover nanoparticles from the sediment for examination; FlFFF results indicate that the toxic metals are held in the nano-size fraction of the sediment and their peak shapes and size distributions correlate best with those for Fe and Ti. TEM data confirms this on a single nanoparticle scale; the toxic metals were found almost exclusively associated with nano-size oxide minerals, most commonly brookite, goethite and lepidocrocite.

Effect of Tributary Inflows on the Distribution of Trace Metals in Fine-Grained Bed Sediments and Benthic Insects of the Clark Fork River, Montana

1997 ◽  
Vol 31 (3) ◽  
pp. 750-758 ◽  
Author(s):  
Ellen V. Axtmann ◽  
Daniel J. Cain ◽  
Samuel N. Luoma
Keyword(s):  
Trace Metals ◽  
Bed Sediments ◽  
Benthic Insects ◽  
Fine Grained ◽  
Clark Fork River

scholarly journals Chemical characterization of sediments and pore water from the upper Clark Fork river and milltown reservoir, Montana

1994 ◽  
Vol 13 (12) ◽  
pp. 1971-1983 ◽  
Author(s):  
W.G. Brumbaugb ◽  
C.G. Ingersoll ◽  
N.E. Kemble ◽  
T.W. May ◽  
J.L. Zajicek
Keyword(s):  
Pore Water ◽  
Chemical Characterization ◽  
Clark Fork River ◽  
Upper Clark Fork River ◽  
Milltown Reservoir

Mercury and Other Mining-Related Contaminants in Ospreys Along the Upper Clark Fork River, Montana, USA

2011 ◽  
Vol 62 (4) ◽  
pp. 681-695 ◽  
Author(s):  
Heiko W. Langner ◽  
Erick Greene ◽  
Robert Domenech ◽  
Molly F. Staats
Keyword(s):  
Clark Fork River ◽  
Upper Clark Fork River

BIO ACCUMULATION OF METALS BY HYALELLA AZTEC A EXPOSED TO CONTAMINATED SEDIMENTS FROM THE UPPER CLARK FORK RIVER, MONTANA

1994 ◽  
Vol 13 (12) ◽  
pp. 2013 ◽  
Author(s):  
Chris G. Ingersoll ◽  
William G. Brumbaugh ◽  
F. James Dwyer ◽  
Nile E. Kemble
Keyword(s):  
Contaminated Sediments ◽  
Clark Fork River ◽  
Accumulation Of Metals ◽  
Upper Clark Fork River

Mining-Related Trace Elements in Riparian Food Webs of the Upper Clark Fork River Basin

1995 ◽  
Vol 1995 (1) ◽  
pp. 31-51
Author(s):  
R. A. Pastorok ◽  
A. J. La Tier ◽  
M. K. Butcher ◽  
T. C. Ginn
Keyword(s):  
Trace Elements ◽  
Food Webs ◽  
River Basin ◽  
Clark Fork River ◽  
Upper Clark Fork River

The physiological impairment of free-ranging brown trout exposed to metals in the Clark Fork River, Montana

1995 ◽  
Vol 52 (9) ◽  
pp. 2038-2050 ◽  
Author(s):  
Aïda M. Farag ◽  
Mark A. Stansbury ◽  
Harold L. Bergman ◽  
Christer Hogstrand ◽  
Elizabeth MacConnell
Keyword(s):  
United States ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Fish Population ◽  
Western United States ◽  
Reference Sites ◽  
Clark Fork River ◽  
Brown Trout Salmo Trutta ◽  
Upper Clark Fork River ◽  
High Concentrations

Tissue metal accumulation and physiological responses were measured in brown trout (Salmo trutta) collected from two sites on the Clark Fork River, Montana, and two reference sites to determine the health status of the resident fish population. Concentrations of metals in tissues, products of lipid peroxidation, and microscopic Cu inclusions were significantly higher in fish collected from the upper Clark Fork River site than in fish from reference sites. Metallothionein concentrations were higher in the livers of fish from the upper Clark Fork River than in those of fish from reference sites. The health of the fish population in the upper Clark Fork River is probably impaired because of previously reported elevated concentrations of metals including As, Cd, Cu, Pb, and Zn in the surface water and aquatic invertebrates in the upper Clark Fork River. The high concentrations of metals in the surface waters and sediments of the Clark Fork River are typical of rivers in the intermountain western United States where discharges from mining activities have occurred since the late 1800s. Thus, our findings can be used as a guide for researchers throughout the intermountain western United States who may investigate similar field conditions.

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